hashmap -> hashset

Author: kantai

testnet/stacks-node/src/nakamoto_node.rs

@@ -13,7 +13,7 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
-use std::collections::HashMap;
+use std::collections::HashSet;
 use std::sync::mpsc::Receiver;
 use std::thread;
 use std::thread::JoinHandle;
@@ -48,7 +48,7 @@ const VRF_MOCK_MINER_KEY: u64 = 1;
 
 pub const BLOCK_PROCESSOR_STACK_SIZE: usize = 32 * 1024 * 1024; // 32 MB
 
-pub type BlockCommits = HashMap<Txid, ()>;
+pub type BlockCommits = HashSet<Txid>;
 
 /// Node implementation for both miners and followers.
 /// This struct is used to set up the node proper and launch the p2p thread and relayer thread.

testnet/stacks-node/src/nakamoto_node/relayer.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 use core::fmt;
-use std::collections::HashMap;
+use std::collections::HashSet;
 use std::sync::mpsc::{Receiver, RecvTimeoutError};
 use std::thread::JoinHandle;
 use std::time::{Duration, Instant};
@@ -194,7 +194,7 @@ impl RelayerThread {
             keychain,
             burnchain: runloop.get_burnchain(),
             last_vrf_key_burn_height: None,
-            last_commits: HashMap::new(),
+            last_commits: HashSet::new(),
             bitcoin_controller,
             event_dispatcher: runloop.get_event_dispatcher(),
             local_peer,
@@ -309,8 +309,7 @@ impl RelayerThread {
 
         self.globals.set_last_sortition(sn.clone());
 
-        let won_sortition =
-            sn.sortition && self.last_commits.remove(&sn.winning_block_txid).is_some();
+        let won_sortition = sn.sortition && self.last_commits.remove(&sn.winning_block_txid);
 
         info!(
             "Relayer: Process sortition";
@@ -692,7 +691,7 @@ impl RelayerThread {
             "txid" => %txid,
         );
 
-        self.last_commits.insert(txid, ());
+        self.last_commits.insert(txid);
         self.last_committed = Some((
             last_committed_at,
             StacksBlockId::new(&tenure_start_ch, &tenure_start_bh),